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Dynamic Assessment of Contact Pressure Changes in the Hip Joint Cartilage During Daily Activities | IEEE Conference Publication | IEEE Xplore

Dynamic Assessment of Contact Pressure Changes in the Hip Joint Cartilage During Daily Activities


Abstract:

The contact stresses in the hip joint cartilage are relevant with clinical hip osteoarthritis. Therefore, the objective of this paper is to discover the contact pressure ...Show More

Abstract:

The contact stresses in the hip joint cartilage are relevant with clinical hip osteoarthritis. Therefore, the objective of this paper is to discover the contact pressure changes in acetabular cartilage during series of dynamic postures such as slow walking, normal walking, fast walking, descending stairs and ascending stairs. Subject-specific anatomical models are built from CT images and kinematical models are constructed using a motion capture system. A two-step adjusted-iterative closest point method is proposed to register the anatomical model with the motion capture recorded kinematical model. After the registration, acetabular cartilage contact pressure is analyzed by a finite element method. According to simulation results, the distribution of walking and stairs movements for contact pressure are mostly uniform during cycle of movement. The peak of contact pressure appears at the heel-strike. The contact area spreads from anterior to superior-posterior and ending at anterior for all the activities. These results provide a basic understanding for the hip contact pressure in cartilage during daily activities and they could be used to analyze the pathologic hips in the clinical research.
Date of Conference: 10-12 November 2018
Date Added to IEEE Xplore: 03 January 2019
ISBN Information:
Conference Location: Nanjing, China

References

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